An air-filled parallel-plate has capacitance C0. When it is connected to a battery with EMF V0, it has charge Q0 and stored energy U0. The gap is then filled with a slab of material that has dielectric constant κ.20% Part (b) Enter an expression for the potential difference between the capacitor plates after the addition of the dielectric material. Your expression must include the original potential difference, V0.20% Part (c) Enter an expression for the charge stored by the capacitor after the addition of the dielectric material. Your expression must include the original charge, Q0.20% Part (d) Enter an expression for the capacitance of the capacitor after the addition of the dielectric material. Your expression must include the initial capacitance, C0.20% Part (e) Enter an expression for the energy stored by the capacitor after the addition of the dielectric material. Your expression must include the initial stored energy, U0.